GNU bug report logs - #48596
CC Mode 5.34.1 (C/*l); Typing `(` des not trigger eldoc

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Johannes Neyer <johannes.neyer <at> gmail.com>
To: submit <at> debbugs.gnu.org
Subject: CC Mode 5.34.1 (C/*l); Typing `(` des not trigger eldoc
Date: Sat, 22 May 2021 21:40:40 +0200

`(` is bound to `c-electric-paren` which does not trigger eldoc by 
default. Most
modes have`(` bound to `self-insert-command`.

See https://github.com/joaotavora/eglot/issues/696 for reference.

Package: cc-mode

Emacs : GNU Emacs 27.2 (build 1, x86_64-pc-linux-gnu, GTK+ Version 
3.24.27, cairo version 1.17.4)
of 2021-03-26
Package: CC Mode 5.34.1 (C/*l)
Buffer Style: linux
c-emacs-features: (pps-extended-state col-0-paren posix-char-classes 
gen-string-delim gen-comment-delim syntax-properties 1-bit)

Message #10 received at 48596 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Johannes Neyer <johannes.neyer <at> gmail.com>
Cc: Alan Mackenzie <acm <at> muc.de>, 48596 <at> debbugs.gnu.org
Subject: Re: bug#48596: CC Mode 5.34.1 (C/*l); Typing `(` des not trigger eldoc
Date: Fri, 15 Jul 2022 12:20:44 +0200

Johannes Neyer <johannes.neyer <at> gmail.com> writes:

> `(` is bound to `c-electric-paren` which does not trigger eldoc by
> default. Most
> modes have`(` bound to `self-insert-command`.
>
> See https://github.com/joaotavora/eglot/issues/696 for reference.

(I'm going through old bug reports that unfortunately weren't resolved
at the time.)

Perhaps Alan has some comments here; added to the CCs.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 48596 <at> debbugs.gnu.org (full text, mbox):

From: Alan Mackenzie <acm <at> muc.de>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: Johannes Neyer <johannes.neyer <at> gmail.com>, 48596 <at> debbugs.gnu.org
Subject: Re: bug#48596: CC Mode 5.34.1 (C/*l); Typing `(` des not trigger eldoc
Date: Fri, 15 Jul 2022 18:50:48 +0000

Hello, Lars and Johannes.

On Fri, Jul 15, 2022 at 12:20:44 +0200, Lars Ingebrigtsen wrote:
> Johannes Neyer <johannes.neyer <at> gmail.com> writes:

> > `(` is bound to `c-electric-paren` which does not trigger eldoc by
> > default.

This is true.

> Most modes have`(` bound to `self-insert-command`.

This is also true.

There seems to be a suggestion that if CC Mode's ( were bound to
self-insert-command, suddenly eldoc facilities would become available.
This is sadly not true.

Doing a quick grep through lisp/progmodes, it seems that those languages
which use eldoc do not have compile-time type checking.  This makes it
far easier to write the whole argument sequence of a function into the
limited space of the echo area.

The languages using eldoc seem to be in a minority - Lisp, Python, Perl,
Octave.  I do not know if the eldoc infrastructure handles languages
with compile-time type annotations.

> > See https://github.com/joaotavora/eglot/issues/696 for reference.

> (I'm going through old bug reports that unfortunately weren't resolved
> at the time.)

> Perhaps Alan has some comments here; added to the CCs.

I think that to add an eldoc facility to CC Mode would be quite a lot of
work.  Patches are welcome!

> -- 
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no

-- 
Alan Mackenzie (Nuremberg, Germany).

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